Influence of environment on the fatigue of Pb-Sn solder joints

Author

Guo, Zhenfeng ; Sprecher, A.F. ; Jung, Dae Young ; Conrad, H.

Author_Institution

Dept. of Mater. Sci. & Eng., North Carolina State Univ., Raleigh, NC, USA

Volume

14

Issue

4

fYear

1991

fDate

12/1/1991 12:00:00 AM

Firstpage

833

Lastpage

837

Abstract

The effect of a vacuum (~10^-6 torr) on the low cycle fatigue life (25, 50, 75, and 95% drop in load) of 10Sn90Pb and 63Sn37Pb solder joints tested in shear was investigated in total strain control (Δγ_t=0.006 to 0.5, υ=0.1 Hz ramp cycling) at 300 K. The influence of a grease coating was determined for the 63Sn37Pb alloy for Δγ_t=0.07=0.80. No clear effect of vacuum occurred for the strain range considered. The grease coating improved fatigue life for a constant total strain range. Possible explanations for the observed effects are given

Keywords

fatigue testing; lead alloys; soldering; tin alloys; 0.1 Hz; 10Sn90Pb alloys; 1E-6 torr; 300 K; 63Sn37Pb alloy; Pb-Sn solder joints; constant total strain range; environment influence; fatigue; grease coating; low cycle fatigue life; ramp cycling; shear stress; tested in shear; total strain control; vacuum; Assembly; Capacitive sensors; Coatings; Copper; Electronic components; Fatigue; Life testing; Soldering; Strain control; Stress;

fLanguage

English

Journal_Title

Components, Hybrids, and Manufacturing Technology, IEEE Transactions on

Publisher

ieee

ISSN

0148-6411

Type

jour

DOI

10.1109/33.105141

Filename

105141